Re:Overcomplicated solution to a simple problem (Score 1)

But once you give someone your PIN on the phone, then your PIN is "in the wild" and subject to the security and honor of the seller. A more robust way to handle all of this is for card holders to have a way of assigning a unique one-time PIN (OTPIN) for each transaction, whether a check, credit card, or debit card. (For checks, you just write the OTPIN on the check.) The seller would not be able to debit the account without a valid OTPIN given to them by the buyer. Buyers would be able to go to a web site (among other methods) and create OTPINs on demand, which they could give sellers when needed. If someone tried to debit the account again with an OTPIN that's been used before, it would not be honored, and would send or post a notification to the buyer. Mistakes could be ironed out easily, and fraud would be detected easily.